US10825631B2 - Solenoid assembly with decreased release time - Google Patents
Solenoid assembly with decreased release time Download PDFInfo
- Publication number
- US10825631B2 US10825631B2 US16/042,266 US201816042266A US10825631B2 US 10825631 B2 US10825631 B2 US 10825631B2 US 201816042266 A US201816042266 A US 201816042266A US 10825631 B2 US10825631 B2 US 10825631B2
- Authority
- US
- United States
- Prior art keywords
- armature
- slot
- assembly
- solenoid
- flux tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 230000003247 decreasing effect Effects 0.000 title description 5
- 230000004907 flux Effects 0.000 claims abstract description 45
- 230000009849 deactivation Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 description 13
- 230000004044 response Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
Definitions
- the present invention is directed to solenoid assemblies. More particularly, the present invention is directed to solenoid assemblies having solenoid armature assemblies which provide improved or decreased release times between contacts.
- Solenoids are frequently employed in electronic circuits to provide rapid switching. Conventional solenoids exhibit a release time on the order of about 3 to 4 milliseconds. The eddy currents generated during switching limit the solenoids ability to overcome overtravel rapidly.
- a solenoid armature assembly including a flux tube or magnetic bearing having an opposed first end and a second end.
- the armature assembly additionally includes an armature having an opposed third end and a fourth end and movable within the flux tube or magnetic bearing along a mutual axis.
- the fourth end of the armature is slidably movable beyond the second end of the flux tube or magnetic bearing.
- a top plate facing the fourth end of the armature, the top plate having an opening for slidably receiving the central core.
- a slot is included in at least one of the flux tube or magnetic bearing (extending between the first end and the second end), the armature (extending between the third end and the fourth end), and opposed surfaces of the top plate (extending from the opening toward an edge).
- a solenoid assembly including the solenoid armature assembly having a flux tube or magnetic bearing having an opposed first end and a second end.
- the armature assembly additionally includes an armature having an opposed third end and a fourth end and movable within the flux tube or magnetic bearing along a mutual axis. The fourth end of the armature is slidably movable beyond the second end of the flux tube or magnetic bearing.
- a slot is included in at least one of the flux tube or magnetic bearing (extending between the first end and the second end), the armature (extending between the third end and the fourth end), and opposed surfaces of the top plate (extending from the opening toward an edge).
- FIG. 1 is a perspective view of a solenoid, according to an embodiment, shown in the open position.
- FIG. 2 is a perspective view of a solenoid, according to an embodiment, shown in the closed position.
- FIG. 3 is an exploded view of a solenoid armature, according to an embodiment.
- a solenoid switch for example, in comparison to concepts failing to include one or more features disclosed herein, provide for the rapid release a solenoid switch.
- the switch exhibits reduced eddy currents and provides a shorter release time.
- FIGS. 1 and 2 An embodiment of a solenoid assembly 100 is shown in FIGS. 1 and 2 .
- the solenoid assembly 100 includes housing 102 having a housing wall 104 including at least one aperture 106 extending through the housing wall 104 .
- the housing wall 104 further defines a cavity 108 .
- a partition 110 is positioned in the cavity 108 and defines at least two regions 112 , 114 within the cavity 108 .
- the partition 110 further includes a partition aperture 116 positioned to allow communication between the at least two regions 112 , 114 .
- the solenoid assembly 100 further includes an armature assembly 118 positioned within the cavity 108 .
- the armature assembly 118 includes a flux tube or magnetic bearing 120 having an opposed first end 122 and a second end 124 .
- the armature assembly 118 further includes an armature 126 having an opposed third end 128 and a fourth end 130 .
- the armature 126 is slidably movable within the flux tube or magnetic bearing 120 and relative to a central core 134 along a mutual axis 132 .
- the fourth end 130 of the armature 126 is slidably movable beyond the second end 124 of the flux tube or magnetic bearing 120 .
- a top core plate 140 is positioned proximate the armature 126 and faces the fourth end 130 of the armature 126 .
- the top core plate 140 has an opening 142 (best shown in FIG. 3 ) for slidably receiving the armature 126 .
- the top core plate 140 is adjacent to a face of the partition 110 .
- the top core plate 140 may be coextensive with the partition 110 .
- the armature assembly 118 is slidably positioned within the solenoid assembly 100 .
- the armature 126 slidably extends through the partition aperture 116 into both of the at least two regions 112 , 114 .
- a movable electrical contact 146 is attached to the armature 126 and is configured to be in selective communication with one or more fixed electrical contacts 148 such that the central core 134 may be selectively positioned to allow communication between the electrical contact 146 and the fixed electrical contacts 148 .
- the fixed electrical contacts 148 may be further configured to selectively communicate with an external circuit (not shown) via the at least one aperture 106 .
- the armature assembly 118 further includes an armature spring 150 positioned in the region 114 .
- the armature spring 150 is attached to both the partition 110 and armature assembly 118 .
- the armature spring 150 is configured to apply an armature spring force to the armature assembly 118 .
- the armature spring force is directed against both the partition 110 and armature assembly 118 in order to move the armature assembly 118 to a retracted position when the coil current is small.
- the armature spring force may cause the armature assembly 118 to slidably at least partially retract through the partition aperture 116 which may selectively position the armature assembly 118 such that the electrical contact 146 and fixed electrical contact 148 will not be in communication.
- a retaining clip 152 is added to an end of the central core 134 to transfer an impact between the armature assembly 118 and the housing wall 104 during movement of the armature assembly 118 , in order to allow for an increased parting force and velocity.
- an air gap 154 between the armature assembly 118 and the partition 110 is maintained, allowing the magnetic force present on the armature assembly 118 to be directly coupled to the electrical contact 146 .
- the armature assembly 118 may optionally further include a contact spring 156 positioned in the region 112 .
- the contact spring 156 may be configured to apply a contact spring force to the armature assembly 118 .
- the contact spring force may be directed against both the partition 110 and armature assembly 118 in order to move the armature assembly 118 to an extended position.
- the contact spring force may cause the armature assembly 118 to slidably at least partially extend through the partition aperture 116 which may selectively position the armature assembly 118 such that the electrical contact 146 and fixed electrical contact 148 will be in communication.
- An optional bottom core plate 158 may be positioned opposite the top core plate 140 to act as a core doubler.
- the bottom plate 158 faces the third end 128 of the armature 126 and has an opening 162 for slidably receiving the armature 126 .
- the bottom core plate 158 may be adjacent to the housing wall 104 .
- the bottom core plate 158 may be coextensive with the housing wall 104 .
- the solenoid assembly 100 further includes an electrically conductive coil 160 positioned within the housing 102 and configured to apply a magnetic force to the armature assembly 118 in response to a coil current within the electrically conductive coil 160 .
- the magnetic force may be in opposition to the armature spring force acting on the armature assembly 118 .
- the magnetic force may cause the armature assembly 118 to slidably at least partially extend through the partition aperture 116 , which may selectively position the armature assembly 118 such that the electrical contact 146 and fixed electrical contact 148 will be in communication.
- the rapidity of the mechanical movement of the armature assembly 118 in response to the magnetic force, determines how quickly the solenoid assembly 100 will respond to the application of the coil current.
- a typical activation response time for a solenoid is about 5 ⁇ 10 ⁇ 2 to 2 ⁇ 10 ⁇ 4 seconds.
- FIG. 3 presents an exploded view of the armature assembly 118 .
- the armature assembly 118 includes the armature 126 having a central axial opening 210 extending a length of the armature 126 .
- the central axial opening 210 exhibits a circular cross section.
- the armature 126 may additionally include an armature slot 220 extending radially from the central axial opening 210 to an outer surface 225 of the armature 126 .
- the armature slot 220 extends the length of the armature 126 .
- the armature slot 220 may be a through slot.
- the armature assembly 118 additionally includes the flux tube or magnetic bearing 120 having a central axial opening 235 extending a length of the flux tube or magnetic bearing 120 .
- the central axial opening 235 exhibits a circular cross section.
- the flux tube or magnetic bearing 120 may additionally include a flux tube slot 245 extending radially from the central axial opening 235 to an outer surface 250 of the flux tube or magnetic bearing 120 .
- the flux tube slot 245 may be a through slot.
- the flux tube slot 245 extends the length of the flux tube or magnetic bearing 120 .
- the flux tube or magnetic bearing 120 may be configured to receive the armature 126 within the central axial opening 235 .
- the armature 126 may be slidably positioned within the central axial opening 235 of the flux tube or magnetic bearing 120 .
- the top core plate 140 may include a top core plate slot 265 extending radially from the opening 142 to an outer surface or edge 270 of the top core plate 140 .
- the top core plate slot 265 extends between opposed surfaces 266 , 268 of the top core plate 140 .
- the top core plate slot 265 may be a through slot.
- the slots may vary.
- the slots have a width which may be consistent with or equal to the thickness of the particular armature, flux tube or top core plate in which the slot is positioned.
- the slots may be parallel to the longitudinal axis of the armature assembly or may not be parallel to the longitudinal axis of the armature assembly.
- the slots may be straight or may be curved.
- the slots of the components may be aligned. Alternatively, the slots may not be aligned with each other.
- the armature assembly 118 has a slot formed in at least two of the flux tube or magnetic bearing 120 (extending between the first end 122 and the second end 124 ), the armature 126 (extending between the third end 128 and the fourth end 130 ), and the top plate 140 (extending from the opening 142 toward the edge 270 ).
- the slots may be formed or positioned in-line, not aligned or randomly.
- the armature assembly 118 has a slot formed in at each of the flux tube or magnetic bearing 120 (extending between the first end 122 and the second end 124 ), the armature 126 (extending between the third end 128 and the fourth end 130 ), and the top plate 140 (extending from the opening 142 toward the edge 270 ).
- the slots may be formed or positioned in-line, randomly, within an angle of 15 degrees or less, within an angle of 5 degrees or less, or at other angles.
- the armature assembly 118 includes the armature spring 150 having a spring rate of greater than 2 pounds per inch.
- the spring rate of the armature spring 150 and/or the contact spring 156 may be increased to provide an increased separation force to the armature 126 .
- the armature spring 150 exhibits a high spring rate greater than 100 pounds per inch (for example, but not limited to approximately 300 pounds per inch) allowing for increased force and thus more rapid response during de-powering of the solenoid assembly 100 .
- the high spring rate armature spring 150 may be used alone or in combination with the slotted armature materials to reduce the release time of the solenoid assembly 100 .
- the armature assembly operates in the linear region of the magnetic operating curve of the material (below saturation).
- a typical de-activation release time of a conventional solenoid is greater than about 3 milliseconds.
- the inclusion of one or more slotted components in the armature assembly 118 results in decreased release times while still allowing full contact overtravel and full contact force, thereby insuring that a positive electrical connection is affected when the movable contact is moved into engagement with the stationary contact.
- the inclusion of the armature spring 150 having a high spring rate alone or in combination with one or more slotted components results in decreased release times. In some embodiments, the release time is less than 2 milliseconds.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
TABLE 1 | |||||
Core | Core | Flux | Spring | Release Time | |
Top | Bottom | Tube | Armature | Rate | (milliseconds) |
slot | no | no slot | no slot | low | 2.13 |
slot | yes | slot | no slot | low | 2.69 |
no slot | yes | slot | slot | low | 2.83 |
no slot | yes | no slot | no slot | low | 3.39 |
no slot | no | no slot | slot | low | 2.21 |
slot | no | slot | no slot | high | 1.63 |
slot | yes | slot | slot | high | 1.90 |
no slot | no | slot | slot | high | 1.57 |
slot | no | slot | slot | low | 2.07 |
slot | yes | no slot | no slot | high | 2.04 |
slot | no | no slot | slot | high | 1.48 |
no slot | yes | slot | no slot | high | 2.63 |
no slot | no | slot | no slot | low | 2.78 |
slot | yes | no slot | slot | low | 2.69 |
no slot | no | no slot | no slot | high | 1.75 |
no slot | yes | no slot | slot | high | 1.98 |
Claims (18)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/042,266 US10825631B2 (en) | 2018-07-23 | 2018-07-23 | Solenoid assembly with decreased release time |
PCT/IB2019/056256 WO2020021436A1 (en) | 2018-07-23 | 2019-07-22 | Solenoid assembly with decreased release time |
JP2021503157A JP7374173B2 (en) | 2018-07-23 | 2019-07-22 | Solenoid assembly with reduced release time |
EP19773513.7A EP3827458B1 (en) | 2018-07-23 | 2019-07-22 | Solenoid assembly with decreased release time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/042,266 US10825631B2 (en) | 2018-07-23 | 2018-07-23 | Solenoid assembly with decreased release time |
Publications (2)
Publication Number | Publication Date |
---|---|
US20200027675A1 US20200027675A1 (en) | 2020-01-23 |
US10825631B2 true US10825631B2 (en) | 2020-11-03 |
Family
ID=68051837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/042,266 Active 2039-03-19 US10825631B2 (en) | 2018-07-23 | 2018-07-23 | Solenoid assembly with decreased release time |
Country Status (4)
Country | Link |
---|---|
US (1) | US10825631B2 (en) |
EP (1) | EP3827458B1 (en) |
JP (1) | JP7374173B2 (en) |
WO (1) | WO2020021436A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230298838A1 (en) * | 2022-03-17 | 2023-09-21 | Calb Co., Ltd. | Relay, battery distribution box and battery pack |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2539547A (en) | 1945-06-13 | 1951-01-30 | Clare & Co C P | Relay |
US4290039A (en) | 1978-10-26 | 1981-09-15 | Kabushiki Kaisha Fujikoshi | AC Solenoid apparatus of the armature in tube type |
US4409580A (en) | 1981-01-08 | 1983-10-11 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Solenoid actuator for electromagnetic valve |
US20080122562A1 (en) * | 2006-11-28 | 2008-05-29 | Tyco Electronics Corpoation | Hermetically sealed electromechanical relay |
US20080245983A1 (en) * | 2005-10-12 | 2008-10-09 | Schaeffler Kg | Hydraulic Directional Valve |
US20110204269A1 (en) * | 2010-02-22 | 2011-08-25 | Schaeffler Technologies Gmbh & Co. Kg | Activation element of an electromagnetic actuating unit of a hydraulic valve |
US20160079017A1 (en) | 2014-09-16 | 2016-03-17 | Tyco Electronics Corporation | Arc control for contactor assembly |
US9324488B2 (en) * | 2012-03-28 | 2016-04-26 | Eaton Corporation | Solenoid assembly |
US20170271115A1 (en) * | 2016-03-17 | 2017-09-21 | Husco Automotive Holdings Inc. | Systems and methods for an electromagnetic actuator |
US20180158635A1 (en) * | 2016-02-25 | 2018-06-07 | Fuji Electric Fa Components & Systems Co., Ltd. | Electromagnetic contactor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6178110A (en) * | 1984-09-25 | 1986-04-21 | Matsushita Electric Works Ltd | Hammer solenoid |
JPH0247819Y2 (en) * | 1986-08-07 | 1990-12-14 | ||
US5519370A (en) * | 1991-03-28 | 1996-05-21 | Kilovac Corporation | Sealed relay device |
JP2698720B2 (en) * | 1991-09-10 | 1998-01-19 | シーケーディ株式会社 | solenoid valve |
JP2003229043A (en) * | 2001-11-29 | 2003-08-15 | Matsushita Electric Works Ltd | Electromagnetic switching device |
JP4325393B2 (en) * | 2003-12-22 | 2009-09-02 | オムロン株式会社 | Switchgear |
DE102006006031B4 (en) * | 2005-04-20 | 2009-12-24 | Bürkert Werke GmbH & Co. KG | Electromagnet unit and method for producing such a solenoid unit and a magnet housing for such a solenoid unit |
JP5163318B2 (en) * | 2008-06-30 | 2013-03-13 | オムロン株式会社 | Electromagnet device |
DE102009047080B4 (en) * | 2009-11-24 | 2012-03-29 | Tyco Electronics Amp Gmbh | Electric switch |
JP6265657B2 (en) * | 2013-08-26 | 2018-01-24 | 富士通コンポーネント株式会社 | Electromagnetic relay |
-
2018
- 2018-07-23 US US16/042,266 patent/US10825631B2/en active Active
-
2019
- 2019-07-22 JP JP2021503157A patent/JP7374173B2/en active Active
- 2019-07-22 EP EP19773513.7A patent/EP3827458B1/en active Active
- 2019-07-22 WO PCT/IB2019/056256 patent/WO2020021436A1/en unknown
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2539547A (en) | 1945-06-13 | 1951-01-30 | Clare & Co C P | Relay |
US4290039A (en) | 1978-10-26 | 1981-09-15 | Kabushiki Kaisha Fujikoshi | AC Solenoid apparatus of the armature in tube type |
US4409580A (en) | 1981-01-08 | 1983-10-11 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Solenoid actuator for electromagnetic valve |
US20080245983A1 (en) * | 2005-10-12 | 2008-10-09 | Schaeffler Kg | Hydraulic Directional Valve |
US20080122562A1 (en) * | 2006-11-28 | 2008-05-29 | Tyco Electronics Corpoation | Hermetically sealed electromechanical relay |
US20110204269A1 (en) * | 2010-02-22 | 2011-08-25 | Schaeffler Technologies Gmbh & Co. Kg | Activation element of an electromagnetic actuating unit of a hydraulic valve |
US9324488B2 (en) * | 2012-03-28 | 2016-04-26 | Eaton Corporation | Solenoid assembly |
US20160079017A1 (en) | 2014-09-16 | 2016-03-17 | Tyco Electronics Corporation | Arc control for contactor assembly |
US20180158635A1 (en) * | 2016-02-25 | 2018-06-07 | Fuji Electric Fa Components & Systems Co., Ltd. | Electromagnetic contactor |
US20170271115A1 (en) * | 2016-03-17 | 2017-09-21 | Husco Automotive Holdings Inc. | Systems and methods for an electromagnetic actuator |
US10319549B2 (en) * | 2016-03-17 | 2019-06-11 | Husco Automotive Holdings Llc | Systems and methods for an electromagnetic actuator |
Non-Patent Citations (1)
Title |
---|
International Search Report, International Application No. PCT/IB2019/056256, International Filing Date, Jul. 22, 2019. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230298838A1 (en) * | 2022-03-17 | 2023-09-21 | Calb Co., Ltd. | Relay, battery distribution box and battery pack |
Also Published As
Publication number | Publication date |
---|---|
EP3827458B1 (en) | 2024-01-03 |
WO2020021436A1 (en) | 2020-01-30 |
US20200027675A1 (en) | 2020-01-23 |
JP2021532583A (en) | 2021-11-25 |
JP7374173B2 (en) | 2023-11-06 |
EP3827458A1 (en) | 2021-06-02 |
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